lomasney



(No Model.) 3 Sheets-Sheet 1.

W. P. LOMASNEY. PIPE COUPLING.

N0 431,816. Patented July 8,1890.

WITNESSES. INVE/VTUR.

(No Model.) 3 Sheets-Sheet 2.

W. P. LOMASNEY. PIPE COUPLING.

No. 431,816. Patented July 8, 1890.-

M II

W/TNESSES? 'I/NVENTUR, MaW' n4: nunms Penn 00., mom-mm, wAsmNumn, m c.

(No Model) 3 Sheets-Sheet 3.

W. F. LOMASNEY. PIPE COUPLING.

No. 431,816. I Patented July 8, 1890.

INVENTUR" 212x1 fid UNITED STATES PATENT OFFICE.

WVILLIAM F. LOIWIASNEY, OF SOHENEOTADY, NElV YORK, ASSIGNOR OF ONE HALFTO HENRY MCMULLEN, OF SAME PLACE.

PIPE-COUPLING.

SPECIFICATION forming part of Letters Patent No. 431,816, dated July 8,1890.

Application filed January 24, 1890.

ing drawings and the letters of reference marked thereon, which form apart of this specification.

Similar letters refer to similar parts in the several figures therein.

The object of my invention is to provide a coupling which can be easilyand quickly applied to securely couple pipes of lead, rubber, or otherflexible yielding material.

Figure l of the drawings is a plan view showing two pipes joinedtogether by my improved pipe-coupling, the coupling-section beingprovided with alateral pipe supplied with a cock. Fig. 2 is a centrallongitudinal section taken on the broken line 2 2 in Fig. 1. Figs. 3 andlare similar sections, respectively, showing modified forms of myimproved coupling. Fig. 5 is aview in end elevation of acoupling-section. Fig. 6 is a view in side elevation of thecoupling-section shown in Fig. 3. Fig. 7 is a view in end elevation ofone of the pipes prepared to receive the coupling-section. Figs. 8 and9are respectively views in side and edge elevations of a ring-follower.Figs. 10 and 11 are similar views of a cylinder-follower. Fig. 12 is aview in elevation of the outer end of a coupling shell or gland.

My improved pipe-coupling, as shown in Figs. 1 and 2, consists of thetubular couplingsection A, follower-rings B B, and the coupling shellsor glands O O. The coupling-section is provided with annular end groovesA, preferably having a curved crosssectional outline, as shown in thesectional figures, and a central longitudinal aperture A correspondingin size with the apertures in the pipes to be coupled. Thecoupling-section is also exteriorly screw-threaded at each end,

and may be provided intermediately of the Serial No. 337,925- (Nomodel.)

to be coupled and retroverting the expanded edges 1) of the pipes, sothat they will correspond in cross sectional outline with the grooves inthe ends of the coupling-section, as shown in Figs. 3, 4., and 7 aring-follower B and gland-shell O being first slipped over such end ontothe pipe. The pipes are thencoupled 7o together by inserting the conicalends A of the coupling-section into the expanded ends of the pipes,slipping the followers and glands back to the ends of the pipes, andscrewing the gland-shells onto the threaded ends of the section untilthe followers, urged by the glands, force the retroverted edges of thepipes into the annular groove-seats A with sufiicient power to cause thesoft metal to form a tight joint between the pipe and thecouplingsection.

In Fig. 3 I have shown a slightly-modified form of construction, inwhich the end threads upon the coupling-section are dispensed .with andone of the gland-shells (marked 0 made sufficiently large and long toslide freely over the section and engage with the supplementarygland-shell (marked C The latter shell is exteriorly threaded at. O, andadapted to enter and fit the intoriorly-threaded shell, as shown. Bymeans of the screw-threads. the shells are drawn together and thefollowers acted upon to make a tight joint, as before explained.

In Fig. 4 a modified form of my improved device is shown applied to ahose, which may be made of flexible yielding material, as rubber, orrubber and fabric combined. I have shown in this figure the femalesection of a detachable coupling attached to one end of too the hose.

I prefer to make the follower marked B and shown detached in Figs. 10and 11 in the form of a cylindrical shell to permit a considerableportion of the hose to be retroverted over it, though a singlering-follower B would serve to make a tight joint, and a plurality ofrings arranged side by side would serve the purpose of the elongatedfollower B To attach the coupling to the hose the gland-section marked 0is slipped upon the hose to approximately the position indicated by thedotted lines in Fig. 4 and the follower to the position shown by thesolid lines. The end edges of the hose are then retroverted and drawnover the follower to the position shown, whereupon the gland section Cis slipped over the follower and retroverted portion of the hose toapproximately the position shown by the solid lines. The female part Aof the coupling-section, interiorly threaded at its outer end andexteriorly threaded at its other end to enter and fit the gland-sectionO is screwed into the latter section, as shown, until it tightly packsthe hose between the section and the follower to make a tight joint, asbefore described. The male part of the section (not shown in Fig. 4:)could be secured to the other section of hose in precisely the samemanner as the female part is secured to the hose H, or in substantiallythe same manner shown in Fig. 2, in which figure I have shown by dottedlines J J how the couplingsection A could be made in two detachableparts, that on the right being the interiorlythreaded female part andthat on the left the exteriorly-threaded male part.

I do not wish to be limited to any particular cross-sectional form ofthe annular seat at the ends of the coupling-section for the retroverted pipe edges. They may be right angular to the axial line of thepipes or coupling-section, as indicated by the dot-ted line J in Fig. 2.

WVhen desired, the follower may be integral with the gland itself, asindicated by the dotted lines in Fig. 3. I am thus able to quickly andtightly join two sections of soft-metal pipe or flexible hose withoutthe use of solder or cement.

In a prior coupling followers have been provided with narrow annularnotches or grooves corresponding to similar grooves formed in the flangeof a ferrule, these notches being less in width than the thickness ofthe pipewall. In such construction the wall of the pipe was simplyflared and the soft metal was forced into such notches in manner toreduce the diameter of the metal at adjacent points,

thereby cutting circumferential grooves in the pipe itself, by which itwas weakened. Such notched followers forced upon the flared ends of thepipe weakened it, and, further, as the pipe was not retroverted the holdof the coupling was insecure, the soft metal being liable to be drawnout under a high internal pressure. The bearing provided by myimprovement is circular or curved in cross-section, having a radius muchlarger than the thickness of the pipe-wall, and the follower being alsomade circular in cross-section and of asuitable size is adapted to holdthe retroverted end of the pipe without distorting or weakening thepipe-wall, the entire thickness or body of which is turned back over thefollower, which latter has a diameter in cross section much larger thanthe thickness of the pipe-wall, thereby avoiding a sharp bend in or anymutilation of the same.

WVhat I claim as new, and desire to secure by Letters Patent, is-

1. In a pipe-coupling, a tubular couplingsection having in its endsannular bearinggrooves, a pair of annular followers having each abearing-surface circular in cross-section and formed with a radiusgreater than the thickness of the pipe-wall and concentric with thesimilar surface of the bearing-groove,

a pair of glands adapted to engage with said followers, pipe sectionshaving retroverted ends, and means for forcing said glands against thefollowers and pressing them upon the retroverted pipe ends in thesaidannular bearing grooves, whereby a sufficient hold upon the pipe isafforded without mutilation of the pipe-wall, substantially as setforth.

2. The pipe-coupling comprising a tubular coupling-section composed oftwo members having screw-thread connection with each other, and eachprovided with exterior screwthreads and with an annular groove in itsend, two annular followers, the grooves and followers having similarcurvature in crosssection, and the glands interiorly screwthreaded toengage the parts of the couplingsection, whereby the parts of thetubular coupling can be screwed together and the retroverted pipe edgeclamped in the grooves by the glands, substantially as set forth.

In testimony whereof I have hereunto set my hand this 21st day ofJanuary, 1890.

WVILLIAM F. LOMASNEY.

Witnesses:

JAMES A. VAN VOAST, SARA E. GIBBoN.

